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    Power control and overlapping control for a quasi-orthogonal communication system
    4.
    发明申请
    Power control and overlapping control for a quasi-orthogonal communication system 有权

    公开(公告)号：US20060211441A1

    公开(公告)日：2006-09-21

    申请号：US11158587

    申请日：2005-06-21

    申请人： Murat Mese ,  Ayman Naguib ,  Arak Sutivong ,  Dhananjay Gore ,  Alexei Gorokhov ,  Tingfang Ji

    发明人： Murat Mese ,  Ayman Naguib ,  Arak Sutivong ,  Dhananjay Gore ,  Alexei Gorokhov ,  Tingfang Ji

    IPC分类号： H04B7/00

    CPC分类号： H04W52/243 ,  H04W52/34

    摘要： Techniques for controlling transmit power and the amount of overlapping in a quasi-orthogonal system are described. A base station for a sector receives transmissions from terminals in that sector and neighbor sectors and determines performance metrics (e.g., overall throughput) and/or QoS metrics (e.g., minimum data rate) for the terminals in the sector. The base station updates an overlapping factor based on the performance metrics and updates a QoS power control parameter based on the QoS metrics. The overlapping factor indicates the average number of overlapping transmissions sent simultaneously on each time-frequency block usable for data transmission. The QoS power control parameter ensures that the terminals in the sector can achieve minimum QoS requirements. A power control mechanism with multiple loops is used to adjust the transmit power of each terminal. The overlapping factor and QoS power control parameter are updated by two of the loops.

    Channel structures for a quasi-orthogonal multiple-access communication system
    5.
    发明申请
    Channel structures for a quasi-orthogonal multiple-access communication system 有权

    公开(公告)号：US20060209754A1

    公开(公告)日：2006-09-21

    申请号：US11129140

    申请日：2005-05-13

    申请人： Tingfang Ji ,  Ayman Naguib ,  Arak Sutivong ,  Dhananjay Gore ,  Alexei Gorokhov

    发明人： Tingfang Ji ,  Ayman Naguib ,  Arak Sutivong ,  Dhananjay Gore ,  Alexei Gorokhov

    IPC分类号： H04Q7/00

    CPC分类号： H04J11/005 ,  H04B1/7143

    摘要： A channel structure has at least two channel sets. Each channel set contains multiple channels and is associated with a specific mapping of the channels to the system resources available for data transmission. Each channel set may be defined based on a channel tree having a hierarchical structure. To achieve intra-cell interference diversity, the channel-to-resource mapping for each channel set is pseudo-random with respect to the mapping for each remaining channel set. In each scheduling interval, terminals are scheduled for transmission on the forward and/or reverse link. The scheduled terminals are assigned channels from the channel sets. Multiple terminals may use the same system resources and their overlapping transmissions may be separated in the spatial domain. For example, beamforming may be performed to send multiple overlapping transmissions on the forward link, and receiver spatial processing may be performed to separate out multiple overlapping transmissions received on the reverse link.

    Rate selection for a quasi-orthogonal communication system
    8.
    发明申请
    Rate selection for a quasi-orthogonal communication system 有权
    准正交通信系统的速率选择

    公开(公告)号：US20060234646A1

    公开(公告)日：2006-10-19

    申请号：US11150417

    申请日：2005-06-10

    申请人： Ayman Naguib ,  Alexei Gorokhov ,  Tingfang Ji ,  Dhananjay Gore ,  Arak Sutivong

    发明人： Ayman Naguib ,  Alexei Gorokhov ,  Tingfang Ji ,  Dhananjay Gore ,  Arak Sutivong

    IPC分类号： H04B7/00 ,  H04B1/00

    CPC分类号： H04L1/0019 ,  H04L1/0003 ,  H04L1/0016 ,  H04L1/06 ,  H04L25/0212 ,  H04L25/0228 ,  H04L25/0242 ,  H04L25/0256

    摘要： To select a rate for a transmitter in a communication system, a receiver obtains a channel response estimate and a received SINR estimate for the transmitter, e.g., based on a pilot received from the transmitter. The receiver computes a hypothesized SINR for the transmitter based on the channel response estimate and the received SINR estimate. The receiver then selects a rate for the transmitter based on (1) the hypothesized SINR and (2) characterized statistics of noise and interference at the receiver for the transmitter, which may be given by a probability density function (PDF) of SINR loss with respect to the hypothesized SINR. A look-up table of rate versus hypothesized SINR may be generated a priori for the PDF of SINR loss. The receiver may then apply the hypothesized SINR for the transmitter to the look-up table, which then provides the rate for the transmitter.

    摘要翻译： 为了在通信系统中选择发射机的速率，接收机例如基于从发射机接收到的导频，获得用于发射机的信道响应估计和接收到的SINR估计。 接收机基于信道响应估计和接收的SINR估计来计算发射机的假设SINR。 接收机然后基于（1）假设的SINR和（2）用于发射机的接收机处的噪声和干扰的特征统计来选择发射机的速率，其可以由SINR丢失的概率密度函数（PDF）给出， 尊重假设的SINR。 速率与假设SINR的查找表可能会先于SINR损失的PDF生成。 然后，接收机可以将发射机的假设SINR应用于查找表，然后查找表提供发射机的速率。